Category 2 Force and Motion

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

Where is kinetic energy maximum on a roller coaster?

Back

At the bottom of a big hill.

Front

What is the formula to calculate force?

Back

Force is calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is measured in meters per second squared (m/s²).

Front

What is the relationship between mass, force, and acceleration?

Back

According to Newton's second law, force is directly proportional to mass and acceleration (F = ma).

Front

What type of energy transformation occurs in a functioning lamp?

Back

Electrical energy is transformed into light energy.

Front

What is the unit of acceleration?

Back

The unit of acceleration is meters per second squared (m/s²).

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. For example, an object at a height has gravitational potential energy.